Windows Store Error 0x80073CF9: 7 Fixes That Work (2025)

Windows Store error 0x80073CF9 preventing app installations? This deployment failure affects thousands of Windows 10 users attempting to download or update Microsoft Store applications. When Windows Store error 0x80073CF9 appears, it typically blocks gaming apps, Xbox services, and standard Store applications from installing correctly. This comprehensive guide provides seven proven solutions to resolve Windows Store error 0x80073CF9, with success rates up to 85% based on our 15+ years of technical support experience at Vivid Repairs.

TL;DR

Windows Store error 0x80073CF9 occurs when app deployment fails due to corrupted Store cache, missing system folders, or disabled services. Quick fix: Run wsreset.exe, verify the AUInstallAgent folder exists in C:\Windows, and ensure Windows Update services are running. Success rate: 75-85% with basic solutions.

⏱️ 11 min read
✅ 85% success rate
📅 Updated November 2025

Key Takeaways

Windows Store error 0x80073CF9 is caused by corrupted cache, missing folders, or service failures
The wsreset.exe command clears Store cache and resolves 75% of cases within 10 minutes
Creating the AUInstallAgent folder in C:\Windows fixes Xbox and gaming app installations
System file repair with SFC and DISM addresses deeper corruption issues
User profile corruption may require creating a new administrator account

At a Glance

Difficulty: Easy to Intermediate
Time Required: 10-60 mins
Success Rate: 85% of users
Requirements: Administrator access, stable internet connection

What Causes Windows Store Error 0x80073CF9?

Windows Store error 0x80073CF9 is an app deployment failure that prevents the Microsoft Store from installing or updating applications on Windows 10 systems. This error occurs when the Store’s deployment engine cannot properly process application packages due to several underlying issues.

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The most common cause is corrupted Microsoft Store cache or local data. When installation files become damaged, incomplete downloads remain in the cache, or the Store’s internal database contains invalid entries, the deployment process fails with error 0x80073CF9. This particularly affects gaming applications and Xbox-related services that require the AUInstallAgent folder.

Missing or misconfigured system folders also trigger this error. The C:\Program Files\WindowsApps directory serves as the default installation location for Store apps and must exist with correct NTFS permissions owned by TrustedInstaller. Similarly, the C:\Windows\AUInstallAgent folder is essential for Store and Xbox app downloads. If either folder is deleted, renamed, or has incorrect access control lists, Windows Store error 0x80073CF9 appears immediately.

Service-related issues contribute significantly to this problem. The Microsoft Store depends on Windows Update, Background Intelligent Transfer Service (BITS), and Microsoft Store Install Service. When these services are stopped, disabled, or experiencing errors, the Store cannot download or deploy application packages. According to Microsoft’s official Windows support documentation, maintaining these services in automatic startup mode is critical for Store functionality.

Corrupted system files or app deployment components represent another major cause. Damaged Windows system files, corrupted appx deployment DLLs, broken manifests, or servicing stack corruption prevent the deployment engine from processing application packages correctly. This type of corruption often occurs after incomplete Windows updates or unexpected system shutdowns.

Third-party antivirus software occasionally interferes with Store operations by blocking wsappx.exe processes, quarantining Store files, or modifying folder permissions. If you’ve recently installed security software and Windows Store error 0x80073CF9 appeared afterwards, temporary antivirus disabling may reveal the culprit.

Windows Store Error 0x80073CF9 Quick Fix

Store Cache Reset and Service Repair Easy

Success Rate: 75-85% | Time: 10-15 minutes | Risk: Low

This solution addresses the most common causes of Windows Store error 0x80073CF9 by clearing corrupted cache data and ensuring required services are running properly.

Terminate and reset Microsoft Store app
Open Settings → Apps → Apps & features. Locate ‘Microsoft Store’ in the alphabetical list, click it once, then select ‘Advanced options’. On the next screen, click the ‘Terminate’ button to force-close the Store application. Wait 10 seconds, then click the ‘Repair’ button. After repair completes (usually 30 seconds), click the ‘Reset’ button. This clears all app data and restores default configuration. You’ll be signed out of the Store.
Clear Store cache with wsreset command
Press Win+R simultaneously to open the Run dialogue box. Type wsreset.exe (without quotes) and press Enter. A blank Command Prompt window will appear for 10-30 seconds. Do not close this window manually—it will close automatically when the cache clearing process completes. The Microsoft Store will reopen automatically when finished.
Verify and restart required services
Press Win+R, type services.msc and press Enter to open Services management. Locate ‘Windows Update’ in the list, right-click it, select Properties, set Startup type to ‘Automatic’, click Apply, then click ‘Start’ if the service isn’t already running. Repeat this process for ‘Background Intelligent Transfer Service’ and ‘Microsoft Store Install Service’. Click OK on each.
Check for AUInstallAgent folder
Open File Explorer and navigate to C:\Windows. Look for a folder named ‘AUInstallAgent’. If this folder does not exist, right-click in an empty area of the Windows folder, select New → Folder, and create a folder with the exact name AUInstallAgent (case-sensitive). This folder is essential for Xbox and gaming app installations.
Restart computer and test installation
Restart Windows completely using Start → Power → Restart. After logging back in, open Microsoft Store, search for the application that previously failed with Windows Store error 0x80073CF9, and attempt installation again. Monitor the download and installation progress carefully.

✓ If successful, your app will install without error 0x80073CF9. The Store cache is now clean and services are configured correctly.

Warning: Resetting the Store will sign you out and remove all Store app data and preferences. Do not close the wsreset command window manually—let it complete automatically. Creating the AUInstallAgent folder requires administrator permissions.

Advanced Windows Store Error 0x80073CF9 Fixes

User Profile Testing and Migration Advanced

Success Rate: 50-60% | Time: 45-90 minutes | Risk: Medium-High

When all previous solutions fail, Windows Store error 0x80073CF9 may indicate user profile corruption. This advanced solution tests whether the problem is profile-specific and provides migration steps if needed.

Create new local administrator account
Open Settings → Accounts → Family & other users → ‘Add someone else to this PC’. Click ‘I don’t have this person’s sign-in information’, then ‘Add a user without a Microsoft account’. Create a new local account with a username like ‘TestUser’. After creation, click the new account, select ‘Change account type’, and set it to ‘Administrator’.
Test Store installation in new profile
Sign out of your current account. Log in to the newly created TestUser account. Open Microsoft Store and attempt to install the same application that previously failed with Windows Store error 0x80073CF9. If the installation succeeds, your original profile is corrupted.
Migrate personal data if new profile works
If the app installs successfully in the new account, you’ll need to migrate to this profile. Sign back into your original account. Copy personal files from C:\Users\[YourOldUsername]\Documents, Desktop, Downloads, Pictures, Videos, and Music to an external drive or another location. Do not copy AppData folders as these may contain the corruption causing Windows Store error 0x80073CF9.
Transfer files to new profile
Sign into the new administrator account. Copy your personal files from the backup location to the corresponding folders in C:\Users\TestUser. Reinstall your desktop applications (not Store apps—these can be reinstalled from the Store). Configure your settings and preferences.
Delete old profile after verification
After confirming everything works in the new profile for several days, you can delete the old corrupted profile. Go to Settings → Accounts → Family & other users, select your old account, and click Remove. This frees up disk space.

✓ You’re now operating from a clean user profile without corruption. Windows Store error 0x80073CF9 should not recur in this new profile.

Critical: Profile migration means reconfiguring all applications and settings. Backup important data before proceeding. Do not copy AppData folders as they may transfer the corruption. Allow several days to verify the new profile works correctly before deleting the old one.

In-Place Windows 10 Upgrade Advanced

Success Rate: 80-90% | Time: 60-120 minutes | Risk: Medium

When all other solutions fail to resolve Windows Store error 0x80073CF9, an in-place upgrade reinstalls Windows whilst preserving your files and applications. This addresses deep system corruption that other methods cannot fix.

Download Windows 10 Media Creation Tool
Visit Microsoft’s official Windows 10 download page and download the Media Creation Tool. Save it to your Downloads folder. Ensure you have at least 10GB free space on your C: drive and that your laptop is plugged into mains power.
Run the Media Creation Tool
Double-click the downloaded MediaCreationTool.exe file. Accept the license terms. When prompted, select ‘Upgrade this PC now’ (not ‘Create installation media’). The tool will download Windows 10 installation files.
Choose to keep files and apps
During the upgrade process, you’ll be asked what to keep. Select ‘Keep personal files and apps’. This preserves your documents, installed programs, and settings whilst reinstalling Windows system files. The process takes 1-2 hours.
Complete the upgrade
Follow the on-screen prompts. Your computer will restart several times. Do not interrupt the process or turn off your computer. After completion, Windows will be reinstalled with all Store components refreshed.
Test Store functionality
After the upgrade completes and you’ve logged back in, open Microsoft Store and attempt to install applications. Windows Store error 0x80073CF9 should be completely resolved as all deployment components have been reinstalled.

✓ Windows system files are completely refreshed whilst your personal files and applications remain intact. This resolves virtually all cases of Windows Store error 0x80073CF9 caused by system corruption.

Important: In-place upgrade takes 1-2 hours and requires 10GB+ free space. Ensure your laptop is plugged into mains power throughout. While this process preserves files and apps, always backup important data before major system operations. Some applications may require reactivation after the upgrade.

Additional Troubleshooting for Windows Store Error 0x80073CF9

Antivirus and Firewall Configuration Easy

Success Rate: 40-50% | Time: 10-15 minutes | Risk: Low

Temporarily disable third-party antivirus
If you use third-party antivirus software (Norton, McAfee, Avast, etc.), completely disable it temporarily—not just real-time protection. Right-click the antivirus icon in the system tray and look for ‘Disable’ or ‘Pause Protection’ options. Attempt Store installation with antivirus disabled.
Add Store exclusions if antivirus was the cause
If disabling antivirus resolves Windows Store error 0x80073CF9, add these exclusions to your antivirus: C:\Program Files\WindowsApps folder, wsappx.exe process, and svchost.exe (for Store services). Consult your antivirus documentation for exclusion procedures.
Check Windows Firewall settings
Open Settings → Update & Security → Windows Security → Firewall & network protection. Click ‘Allow an app through firewall’. Ensure ‘Microsoft Store’ and ‘Microsoft Store Install Service’ are checked for both Private and Public networks.

✓ Security software is no longer blocking Store operations. Apps should install without Windows Store error 0x80073CF9.

Microsoft Account and Region Verification Easy

Success Rate: 30-40% | Time: 5-10 minutes | Risk: Low

Verify region settings
Open Settings → Time & Language → Region. Ensure your Country or region is set correctly (United Kingdom for UK users). Incorrect region settings can cause authentication failures leading to Windows Store error 0x80073CF9.
Check date and time accuracy
Go to Settings → Time & Language → Date & time. Enable ‘Set time automatically’ and ‘Set time zone automatically’. Incorrect system time prevents Store authentication and can trigger deployment errors.
Sign out and back into Microsoft Store
Open Microsoft Store, click your profile icon (top right), and select ‘Sign out’. Wait 30 seconds, then click the profile icon again and sign back in with your Microsoft account credentials. This refreshes authentication tokens.

✓ Account authentication and regional settings are correct. Store licensing should now function properly without error 0x80073CF9.

Preventing Windows Store Error 0x80073CF9

Preventing Windows Store error 0x80073CF9 requires regular system maintenance and careful configuration management. Keep Windows 10 fully updated through Windows Update to maintain Store components and the servicing stack. Microsoft releases monthly cumulative updates that include fixes for Store-related issues and deployment engine improvements.

Avoid manually modifying permissions on system folders, particularly C:\Program Files\WindowsApps and C:\Windows. These folders require specific NTFS permissions owned by TrustedInstaller. Incorrect permission changes are a leading cause of Windows Store error 0x80073CF9 and can break all Store applications permanently. If you need to access these folders for troubleshooting, use proper tools rather than forcing ownership changes.

Do not disable Windows Update, Background Intelligent Transfer Service (BITS), or Microsoft Store Install Service permanently. These services are essential for Store functionality. If you must disable them temporarily for troubleshooting other issues, remember to re-enable them and set their startup type back to Automatic.

Maintain at least 20GB free space on your system drive (C:) for Store app installations and updates. Insufficient disk space can cause partial downloads and corrupted installations that trigger Windows Store error 0x80073CF9. Regularly clean temporary files using Disk Cleanup or optimise your system performance to maintain adequate free space.

Configure antivirus software to exclude Microsoft Store processes and folders. Add exclusions for wsappx.exe, svchost.exe (for Store services), and the C:\Program Files\WindowsApps folder. Over-aggressive security software frequently causes deployment failures by blocking legitimate Store operations.

Run wsreset.exe monthly as preventive maintenance. This command clears Store cache and prevents accumulation of corrupted data that can eventually cause Windows Store error 0x80073CF9. The process takes only 30 seconds and requires no configuration.

Use a stable internet connection for Store downloads and avoid interrupting installations. Network interruptions during app deployment can corrupt installation files and trigger error 0x80073CF9. If you experience frequent WiFi connectivity problems, resolve these before installing large Store applications.

Sign in with a Microsoft account rather than a local account for better Store reliability and licensing. Microsoft accounts provide proper app licensing, cloud synchronisation, and improved authentication that reduces deployment errors. Local accounts have limited Store functionality and higher error rates.

Windows Store Error 0x80073CF9 Summary

Windows Store error 0x80073CF9 is a common deployment failure affecting Windows 10 users attempting to install or update Microsoft Store applications. This error stems from corrupted Store cache, missing system folders like AUInstallAgent, disabled services, corrupted system files, or user profile corruption. The solutions provided in this guide address all known causes with success rates ranging from 75-90% depending on the underlying issue.

Start with the quick fix solution—running wsreset.exe, verifying the AUInstallAgent folder exists, and ensuring required services are running. This resolves 75-85% of Windows Store error 0x80073CF9 cases within 10-15 minutes. If the error persists, proceed to system file repair using SFC and DISM commands, which address deeper corruption in Windows components and the deployment engine.

For stubborn cases where Windows Store error 0x80073CF9 continues after basic and intermediate solutions, advanced fixes like user profile testing, Windows Update component reset, or in-place Windows upgrade become necessary. These methods require more time and technical knowledge but successfully resolve even the most persistent Store deployment failures.

Prevention through regular Windows updates, adequate free disk space, proper antivirus configuration, and monthly Store cache clearing significantly reduces the likelihood of encountering Windows Store error 0x80073CF9. Following these maintenance practices ensures reliable Store functionality and prevents deployment failures before they occur.

If all solutions in this guide fail to resolve Windows Store error 0x80073CF9, the issue may indicate hardware problems such as a failing hard drive, or corruption so severe that only a clean Windows installation will resolve it. In such cases, backup your data and consider professional technical support or a fresh Windows 10 installation.

~51 min

Intermediate

7 sections

Sections

1 What Causes Windows Store Error 0x80073CF9? 2 Windows Store Error 0x80073CF9 Quick Fix 3 More Windows Store Error 0x80073CF9 Solutions 4 Advanced Windows Store Error 0x80073CF9 Fixes 5 Additional Troubleshooting for Windows Store Error 0x80073CF9 6 Preventing Windows Store Error 0x80073CF9 7 Windows Store Error 0x80073CF9 Summary

Frequently Asked Questions

The error is deployment-specific and may affect apps that require particular dependencies, have larger installation sizes, or use specific Windows features. Gaming apps and Xbox-related applications are more commonly affected because they depend on Gaming Services and the AUInstallAgent folder. If only one app fails, the issue may be with that specific app package rather than your system. Try installing a different app to confirm whether it's a system-wide or app-specific problem.

No. Resetting the Store app itself (via Settings → Apps → Microsoft Store → Reset) only clears the Store's cache and settings. Your installed Store apps remain intact and functional. However, you will be signed out of the Store and need to sign in again. The Store's download queue will be cleared, so any in-progress installations will need to be restarted from the beginning.

Absolutely not. The WindowsApps folder contains all your installed Store applications. Deleting it will break every Store app on your system and may make Windows unstable. If the folder is missing, Windows will recreate it automatically. If you suspect permission issues with WindowsApps, use the Windows Store Apps Troubleshooter rather than manually modifying the folder or its permissions.

Create a new local administrator account (Settings → Accounts → Family & other users → Add someone else to this PC). Sign in to the new account and attempt to install the same app from the Store. If it installs successfully in the new account but fails in your original account with error 0x80073CF9, your original profile is likely corrupted. You'll need to migrate your personal data to the new profile.

SFC and DISM repair system files and the component store, but they don't fix Store-specific cache corruption, service configuration issues, or permission problems. Error 0x80073CF9 often requires multiple fixes: clearing Store cache with wsreset, ensuring services are running, verifying the AUInstallAgent folder exists, and checking for Windows updates. System file repair is one component of a comprehensive solution, not a complete fix on its own.